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Author Topic: Bike whining noise  (Read 1412 times)

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Offline Morokai

Bike whining noise
« on: January 24, 2016, 10:34:02 am »
Recently did a long trip and for the last bout 1000km noticed an 'enigie whine' noise from 80km/h upwards.

There was no buildup to the noise, one day, it was just there
Noise is loudest between 80-100km/h
Did a full oil and filter change - no indication of metal filings - magnetic plugs
Gear shifts are as smooth as ever.

Now here is the screwed up part.  Always heard the noise coming from the engine. Reached my destination and took of all my luggage etc.
After clean up and service rode the bike again, and now I could move my head more freely around ( no luggage blocking the way )
Noise still sounds coming from engine but if I drop my head to the rear left of the bike ( opposite exhorst ), it is moerse loud!

What could possibly cause this engine whine?
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Offline Crab

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Re: Bike whining noise
« Reply #1 on: January 24, 2016, 02:30:36 pm »
Check the bearing in the sprocket carrier. Mine was poked but it never made any noise.
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Offline Casting from Turd

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Re: Bike whining noise
« Reply #2 on: January 24, 2016, 04:31:08 pm »
Maybe it was parked for too long  :lol8:
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Offline SOPWITH

Re: Bike whining noise
« Reply #3 on: January 24, 2016, 05:46:44 pm »
my ex wife wasn't with you by any chance......she was a pro at whining...
 

Offline Casting from Turd

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Re: Bike whining noise
« Reply #4 on: January 24, 2016, 06:23:35 pm »
my ex wife wasn't with you by any chance......she was a pro at whining...

You should have kept a box of crackers at hand  :peepwall:  :patch:
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Offline Morokai

Re: Bike whining noise
« Reply #5 on: January 25, 2016, 09:04:09 am »
Check the bearing in the sprocket carrier. Mine was poked but it never made any noise.
:thumleft:

my ex wife wasn't with you by any chance......she was a pro at whining...

I might have passed her yes  ???
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Offline lecap

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Re: Bike whining noise
« Reply #6 on: January 25, 2016, 11:29:52 am »
Is it there both in fifth and fourth gear? It is BAD news if it's only in one gear and not in the other.

If yes: How do chain and sprockets look? Also  check the sprocket carrier bearing and the cush drive damper rubbers.
Also check the chain roller under the drive chain.
Check that the drive chain is no too tight.

I don't think it's a output shaft bearing as this will quickly destroy the shaft seal and result in an oil leak. Still worthwhile and easy enough to check.
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Offline Morokai

Re: Bike whining noise
« Reply #7 on: January 25, 2016, 12:58:45 pm »
Is it there both in fifth and fourth gear? It is BAD news if it's only in one gear and not in the other.

If yes: How do chain and sprockets look? Also  check the sprocket carrier bearing and the cush drive damper rubbers.
Also check the chain roller under the drive chain.
Check that the drive chain is no too tight.

I don't think it's a output shaft bearing as this will quickly destroy the shaft seal and result in an oil leak. Still worthwhile and easy enough to check.

Yes it is in all the gears at higher speed ( 3rd/4th and 5th )

Chain and sprockets is fine ( have about 8000km on them )

rear sprocket carrier bearing has been replaced about 7000km ago ( double sealed ) , but bearing does feel a bit edgy, not as smooth as wheel bearings
 
if the cush drive dampers are on their way out, how detrimental is it? can one still drive 5000km with them?
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Offline ChristoffGS

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Re: Bike whining noise
« Reply #8 on: January 25, 2016, 03:57:02 pm »
Just a thought - check chain tension.  My dad's dakar once had a weird whining noise and it turned out to be the chain that had too little slack.
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Offline Morokai

Re: Bike whining noise
« Reply #9 on: January 25, 2016, 04:26:03 pm »
Check the bearing in the sprocket carrier. Mine was poked but it never made any noise.

changed it about 7000km back....but will sommer again

Just a thought - check chain tension.  My dad's dakar once had a weird whining noise and it turned out to be the chain that had too little slack.

ill check again
i do have a look religiously at least once a day when i ride
but you never know
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Offline lecap

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Re: Bike whining noise
« Reply #10 on: January 26, 2016, 09:52:42 am »
A cush drive damper is an integral and essential part of a high power roller chain drive. If you don't have one or if it's worn you end up with vibration NOISE and increased wear.

Replace as son as possible or live with increased chain and sprocket wear, noisy and sticky gear shifts, possibly gear face pitting and whining?
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Offline Morokai

Re: Bike whining noise
« Reply #11 on: January 28, 2016, 07:21:52 am »
A cush drive damper is an integral and essential part of a high power roller chain drive. If you don't have one or if it's worn you end up with vibration NOISE and increased wear.

Replace as son as possible or live with increased chain and sprocket wear, noisy and sticky gear shifts, possibly gear face pitting and whining?

 :thumleft:
Fear is temporary, Regret is forever.

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